Apparatus for the extraction of zinc.



No. 775,360. PATENTED NOV. 22, 1904. G. S. BRAND.

APPARATUS FOR THE EXTRACTION 0F ZINC.

APPLICATION TILED YEIB. 6,1904.

UNTTED STATES Patented November 22, 1904.

PATENT FFICE.

APPARATUS FOR THE EXTRACTION OF ZINC.

SPECIFICATION forming part of Letters Patent No. 775,360, dated November 22, 1904.

Application filed February 6, 1904. Serial No. 192,433. No model) To whom it may concern:

Be it known that 1, CHARLES SKINNER BRAND, a subject of the King of Great Britain and Ireland, residing at Gladstone Road, Dorridge, Knowle,in the county oflVarwiclgEngland, have invented a certain new and useful Improvement Relating to Apparatus for the Extraction of Zinc, of which the following is a specification.

This invention relates to the extraction of zinc, and has for its object to provide simple and convenient means for the separation from the zinc-vapors of the lead brought over with the said vapors from the retorts or distillingchambers. Such lead is very generally allowed to pass into the zinc orspelter, and not infrequently it is found that ordinary commercial zinc or spelter contains as much as two or even three per cent. of lead, rendering it useless for many services.

My invention comprises the arrangement within each of the nozzles or condensing-pipes placed in the ordinary manner in the retortmouths of a baflle or the like that shall serve to form a lead-interception chamber, While allowing the zinc-vapors to pass forward to the condensing area.

Referring to the accompanying sheet of explanatory drawings, Figure 1 is a sectional side elevation, and Fig. 2 an end view showing one form of nozzle or condensing-pipe constructed in accordance with my invention.

The same reference-letters in the two views indicate the same parts.

The right-hand end of the nozzle or pipe is luted or fitted in the mouth of the retort, as a, in the ordinary manner. The said end has a perforated extremity b, as shown, While at a little distance from such extremity there is provided within the nozzle or pipe a baffle or bridge, as c. The lower surface of the pipe is inclined from the baffle 0 toward the extremity 7), as illustrated. ln advance of the baffle or bridge 0 the under portion of the nozzle or pipe is made to the usual bellied form.

During working the forward or outer extremity of the nozzle is partially closed by clay, as

f. The portion of the nozzle pro ecting in the central chamber portion (3, where they are condensed, the lead-vapors brought into the nozzle or pipe with the zinc-vapors are condensed and thrown down in the interceptionchamber, from whence they flow back into the retort or distillation-chamber u.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

In the extraction of zinc, the combination consisting of a retort, or detachable nozzle or condensing-pipe having a free space in its interior, an internal bridge or bath e-piece projecting from the under side of the said pipe toward the upper side of the same and dividing the pipe interior into fore-and-aftareas or chambers communicating only at their upper sides, a rearwardly-inclined lower surface in the aft area or chamber, a perforated closure at the rear end of the pipe and a detachable partial closure at the forward end of the same, as set forth.

In Witness whereof I have hereunto set my hand in presence of two witnesses.

CHARLES SKlNNER BRAND.

l/Vitnesses:

EDWARD Manxs, JOHN MORGAN. 

